@monsterblue well if you want them to run on an original NES you'd need to just not use any add-on sound chips, so you get the usual five NES channels and that's it, but you can do a lot of neat stuff with that, give this a listen: https://www.youtube.com/watch?v=Mi7l8ZIrG8s
-F
Follow
@monsterblue and i mean there's all the classics from castlevania and mario and stuff too, the ones you think of when you think good music on the NES (the link above is amazing music but pretty unknown because the game is hot garbage, they just got tim follin to do the soundtrack)
-F
@monsterblue in theory it'd probably be possible to also detect whether the console supports it and switch between two versions of the soundtrack too
oh, also just about every emulator will support sound chips too, by the way
-F